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A study comparing outcomes between obese and nonobese patients with lumbar disc herniation undergoing surgery : a study of the Swedish National Quality Registry of 9979 patients

Hareni, Niyaz LU ; Strömqvist, Fredrik LU ; Rosengren, Björn E. LU and Karlsson, Magnus K. LU (2022) In BMC Musculoskeletal Disorders 23(1).
Abstract

Background: This study aimed to evaluate whether an increasing grade of obesity is associated with inferior outcomes after lumbar disc herniation (LDH) surgery. Methods: We retrieved data from the Swedish register for spine surgery regarding patients aged 20–64 who underwent LDH surgery from 2006–2016 and had preoperative and one-year postoperative data. A total of 4156 patients were normal weight, 4063 were overweight, 1384 had class I obesity, 317 had class II obesity and 59 had class III obesity (“morbid obesity”). Data included patient satisfaction, improvement in leg pain (assessed using the National Rating Scale; NRS; rating 0–10), disability (assessed using the Oswestry Disability Index; ODI; rating 0–100) and complications.... (More)

Background: This study aimed to evaluate whether an increasing grade of obesity is associated with inferior outcomes after lumbar disc herniation (LDH) surgery. Methods: We retrieved data from the Swedish register for spine surgery regarding patients aged 20–64 who underwent LDH surgery from 2006–2016 and had preoperative and one-year postoperative data. A total of 4156 patients were normal weight, 4063 were overweight, 1384 had class I obesity, 317 had class II obesity and 59 had class III obesity (“morbid obesity”). Data included patient satisfaction, improvement in leg pain (assessed using the National Rating Scale; NRS; rating 0–10), disability (assessed using the Oswestry Disability Index; ODI; rating 0–100) and complications. Results: At one year postsurgery, 80% of normal-weight patients, 77% of overweight patients and 74% of obese patients (class I-III evaluated together) were satisfied (p < 0.001) [75%, 71%, 75% in obesity classes I, II, and III, respectively (p = 0.43)]. On average, all groups improved by more than the minimal clinically important difference (MCID) in both NRS leg pain (> 3.5) and ODI (> 20). NRS leg pain improved by 4.8 in normal weight patients (95% CI 4.7–4.9), by 4.5 in overweight patients (4.5–4.6) and by 4.3 in obese patients (4.2–4.4) (p < 0.001) [4.4 (4.3–4.6), 3.8 (3.5–4.1) and 4.6 (3.9–5.3) in obesity classes I, II, and III, respectively (p < 0.001)]. The ODI improved by 30 in normal weight patients (30–31), by 29 in overweight patients (28–29) and by 26 in obese patients (25–27) (p < 0.001) [29 (28–29), 25 (22–27) and 27 (22–32) in obesity classes I, II, and III, respectively (p < 0.01)]. A total of 3.0% of normal-weight patients, 3.9% of overweight patients and 3.9% of obese patients suffered complications (p = 0.047) [3.8%, 4.4%, 3.5% in obesity classes I, II, and III, respectively (p = 0.90)]. Conclusions: LDH surgery is also generally associated with favourable outcomes and few complications in patients with morbid obesity.

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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
BMI, Lumbar disc herniation, Obesity
in
BMC Musculoskeletal Disorders
volume
23
issue
1
article number
931
publisher
BioMed Central (BMC)
external identifiers
  • scopus:85140305755
  • pmid:36273136
ISSN
1471-2474
DOI
10.1186/s12891-022-05884-8
language
English
LU publication?
yes
id
7cbe31e6-01fb-45c1-b3af-fa9c9065e63e
date added to LUP
2022-12-06 13:52:57
date last changed
2024-06-13 23:03:16
@article{7cbe31e6-01fb-45c1-b3af-fa9c9065e63e,
  abstract     = {{<p>Background: This study aimed to evaluate whether an increasing grade of obesity is associated with inferior outcomes after lumbar disc herniation (LDH) surgery. Methods: We retrieved data from the Swedish register for spine surgery regarding patients aged 20–64 who underwent LDH surgery from 2006–2016 and had preoperative and one-year postoperative data. A total of 4156 patients were normal weight, 4063 were overweight, 1384 had class I obesity, 317 had class II obesity and 59 had class III obesity (“morbid obesity”). Data included patient satisfaction, improvement in leg pain (assessed using the National Rating Scale; NRS; rating 0–10), disability (assessed using the Oswestry Disability Index; ODI; rating 0–100) and complications. Results: At one year postsurgery, 80% of normal-weight patients, 77% of overweight patients and 74% of obese patients (class I-III evaluated together) were satisfied (p &lt; 0.001) [75%, 71%, 75% in obesity classes I, II, and III, respectively (p = 0.43)]. On average, all groups improved by more than the minimal clinically important difference (MCID) in both NRS leg pain (&gt; 3.5) and ODI (&gt; 20). NRS leg pain improved by 4.8 in normal weight patients (95% CI 4.7–4.9), by 4.5 in overweight patients (4.5–4.6) and by 4.3 in obese patients (4.2–4.4) (p &lt; 0.001) [4.4 (4.3–4.6), 3.8 (3.5–4.1) and 4.6 (3.9–5.3) in obesity classes I, II, and III, respectively (p &lt; 0.001)]. The ODI improved by 30 in normal weight patients (30–31), by 29 in overweight patients (28–29) and by 26 in obese patients (25–27) (p &lt; 0.001) [29 (28–29), 25 (22–27) and 27 (22–32) in obesity classes I, II, and III, respectively (p &lt; 0.01)]. A total of 3.0% of normal-weight patients, 3.9% of overweight patients and 3.9% of obese patients suffered complications (p = 0.047) [3.8%, 4.4%, 3.5% in obesity classes I, II, and III, respectively (p = 0.90)]. Conclusions: LDH surgery is also generally associated with favourable outcomes and few complications in patients with morbid obesity.</p>}},
  author       = {{Hareni, Niyaz and Strömqvist, Fredrik and Rosengren, Björn E. and Karlsson, Magnus K.}},
  issn         = {{1471-2474}},
  keywords     = {{BMI; Lumbar disc herniation; Obesity}},
  language     = {{eng}},
  number       = {{1}},
  publisher    = {{BioMed Central (BMC)}},
  series       = {{BMC Musculoskeletal Disorders}},
  title        = {{A study comparing outcomes between obese and nonobese patients with lumbar disc herniation undergoing surgery : a study of the Swedish National Quality Registry of 9979 patients}},
  url          = {{http://dx.doi.org/10.1186/s12891-022-05884-8}},
  doi          = {{10.1186/s12891-022-05884-8}},
  volume       = {{23}},
  year         = {{2022}},
}